Steam-boiler.



.Patented Apr. 9, |90I.

E. T. BIRDSALL.

sTEAmBolLEB.

(Application led Oct. 15, 1900.)

(No Ilo del.)

c EDWARD 1L.1B'j'Ini;,s AlLi., 'oF" yfr1 EwfnoCHELLE,y New YORK, AssreNoR To nEsBEnoN'jMoroR-'czin"0o.,or SAME PLACE.

rel'olLl-zn.

SPEGIFIeATIONfQming-'parr of neaersratem No. 671,938, dated April 9, 1901. original miami@ iin-,d1une 13, 1900, sel-111110;20,112. Divin-.aand this appiimion med omar 15,1900. serial No.

v v l 331052. (Nomodel.)

T0 al?) whowt it' may concer-n;

, Beitknown thatl, EDWARD T. BIRDsALL,"

av citizen of the United States,residing at New Rochelle, in the county of Westchester and State of New York, have made a new andl use-y ful Invention in Steam-Boilers, of which the following is `a spe'cication.

My invention relates particularly to improvements in what-are known in the art as vertical;boiler's,and has forfits object to provide' means whereby a vertically-sustained l boiler maybe readily putin place whenever it is desired' to use it and quickly and easil'y taken downor apart for inspection,.cleaning, or repairing, and will be fullyunderstood by referring to the' accompanying drawings, in which- A Figure 1 is a longitudinal sectional View taken through the entire structure onY the line a: an, Fig. 2', and as seen looking thereat from the bottom toward the top of the drawing in the direction of the arrows; and Fig.

2 is a transverse sectional view takenthrough Fig. l on the line y ya and as seen looking from the top toward the bottom of the draw-- ing in the direction of the arrows.

My improvement has an especial application in the use of boilers in connection with chamber between the upper end of the boiler automobiles propelled by steam.` l l Referring now to the drawings in detail, in both of which like numerals of reference represent like parts whereverused, 1 represents the body of the boiler proper, which is of annular form,having heads 2 2 and a central main firetube 3, around which are arranged radially two or more groups or rows of small fire-tubes eX- tending through the body of the boiler, thev lower ends of the inner group 4 being locatedv directly above the fire-box 10 and the upper ends of both groups connected with a draftand the upper end of a surrounding double heat-retaining metallic jacket 21, filled-with asbestos or equivalent non-heat-radiating material, said jacket being secured at its upper end by screws to the outer rim yof the boiler, as shown. The lower ends of the outer group of tubes 5 all have connection with the annular space between the outer surface of the boiler and its surrounding heat-retaining casing, which space in turn is connected dilrectly nto'the uptake, of usual form, running to thesmoke-stack.

The fire-box 10 is preferably conical in shape, its smaller upperend resting against the lower end of the boiler and its lower end sustained bya'ring-shaped metalbottom 11, provided with an internally-extending flange for sustaining the grate-bars 14, 13 being an ashpan secured to the lower side of the metal bottom 11 and provided with a door, as shown. The bottom 1l is sustained by bolts 12, extending upwardly into four or more radiallydisposed supporting metal legs 8, having inwardly-projecting lugs adapted to sustain the boiler proper, the upper ends of said legs being secured in turn by rivets to two flexible `metallic bands 6, which are held together at their opposite ends by screw-bolts 7 7, the entire arrangement being such that the boiler may be slipped into place between the two- `part metallic bands 6, so that it rests upon the inner ends of the legs 8 and'is firmly held in position by the metallic bands 6 and bolts 7. The legs 8 are in turn secured by bolts, as sh0wn,-to supporting-beams or angle-irons 9 in the carriage or wherever the boiler is designed -to be used. A

The lower end of the heat-retaining jacket 21 rests upon and is secured by screws to the metallic bottom 1l and in turn supports at its upper end an uptake 22 for carrying away the products of combustion to the smokestack. (Not shown.) 15-is a cover located above the central firetn be 3 and is adapted to be removed by a handle, as shown, in order that the fuel may be admitted at the upper end of the boiler. This 'removable cover also makes it possible to adjust the draft as desired. Below this cover 15 is arranged a metal cylindrical rim resting upon the top of the boiler and provided with draft-holes 16, said draft-holes being preferably of such proportion with relation to the central fire-tube 3 and the two groups of smaller iire-tubes 4 and 5 that the draft will cause the products of combustion to ascend through the central lire tube 3 and also through the inner group of smaller tubes 4'4, the products of combustion uniting in the IOO draft-chamber and thence passing into the outer group of smaller fire-tubes 5 5 downward and finally upward outside of the boiler between it and the jacket 21, said products all uniting ultimately and passing out through the uptake 22, 20 being a bafie-plate on the rear side of the boiler forcausing such of the products .of combustion as pass out of these tubes 5 5 adjacent to the uptake to be diverted again, so as to give the best heating eects to the exterior surface of the boiler before they ultimatelyv pass upward, as shown by the arrows.

No claim is made in the present application to the feature of the especial form of boiler hereinbefore described, as this is made the subject-matter of an original application bearing Serial No. 20,112,1iled June 13, 1900, the present application being a division of said application and directed to the means of detachably supporting a boiler in a vertical position, as particularly pointed out in the claims which follow.

My claims hereinafter made are designed to cover, broadly, the means hereinbefore described for use in connection with all types of boilers which may be sustained in a vertical position and in such manner that they may be quickly and readily removed for cleaning or repairing when desired.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. Asteam-,boiler having a series of legs for supporting it in a vertical position; in combination with one or more flexible metallic bands attached to said legs; together with means for causing said bands to grip or hold the boilerin place, substantially as described.

2. Means for supporting a steam-boiler in a vertical position, consisting of a series of legs provided with internally projecting lugs upon which the boiler is adapted to rest; in combination with means secured to the legs for firmly gripping or securing the boiler detachably in place, substantially as described.

3. A steam-boiler provided with a series of supporting-legs and means attached to the legs for detachably securing the boiler in place; in combination with a fire-box, au ashpan and means for securing the'same to the legs, substantially as described.

4. A steam-boiler provided with a series of supporting-legs adapted to sustain it vertically; in combination with means attached to the legs for detachably securing it in place; together with a lire-box, an ash-pan and a non-heat-conducting casing, all carried by said legs, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

EDWARD T. BIRDSALL.

Witnesses:

C. J. KINTNER, M. F. KEATING. 

